The school heating has three zones. 
From November until April the heating comes on at 7am until 9.30, comes on again at 1pm until 2pm. in classrooms and the office.
The heating is turned off completely from April until the start of November, and during all holidays, apart from the old building where there is 2 hours during the night to stop pipe freezing and damp.
There is no heating on over the weekend.